Tag: M.W:200-300

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 11-Bromoundecanoic acid( cas:2834-05-1 ) is researched.Electric Literature of C11H21BrO2.Pradhan, Tapas R.; Lee, Hae Eun; Gonzalez-Montiel, Gisela A.; Cheong, Paul Ha-Yeon; Park, Jin Kyoon published the article 《Highly Chemoselective Esterification from O-Aminoallylation of Carboxylic Acids: Metal- and Reagent-Free Hydrocarboxylation of Allenamides》 about this compound( cas:2834-05-1 ) in Chemistry – A European Journal. Keywords: trans acyloxyenamide preparation regioselective chemoselective diastereoselective green chem; allenamide carboxylic acid hydrocarboxylation aminoallylation; (E)-enamides; Brønsted acid; carboxylic acids; linear selective; metal-free. Let’s learn more about this compound (cas:2834-05-1).

Metal-free hydrocarboxylation of allenamides RCH=C=CH2 (R = N-benzyl(4-methylbenzene)sulfonamide, (methoxycarbonyl)(naphthalen-1-yl)aminyl, 2-oxo-1,3-oxazolidin-3-yl, etc.) with various functionalized carboxylic acids R1C(O)OH (R1 = Me, Ph, 1-(4-nitrophenyl)ethyl, 6-chloroimidazo[1,2-a]pyridin-3-yl, etc.) was achieved with complete regio- and stereocontrol (>49:1). This environmentally compatible transformation affords γ-acyloxyenamides RCH=CHCH2OC(O)R1 with exclusive E-selectivity. Electron rich, electron poor, aliphatic, aryl, and heterocyclic carboxylic acids all gave excellent yields (avg. 89%, 47 examples). The synthetic potential of this transformation in the late-stage modification of complex natural carboxylic acids and simple modification of the products to three-carbon synthons with ample opportunity for further diversification were demonstrated. DFT studies revealed that the reaction occurs in a stepwise manner through the intermediacy of a conjugated iminium species, which is rapidly captured by the carboxylate ion, resulting in the observed linear selectivity.

《Highly Chemoselective Esterification from O-Aminoallylation of Carboxylic Acids: Metal- and Reagent-Free Hydrocarboxylation of Allenamides》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(11-Bromoundecanoic acid)Electric Literature of C11H21BrO2.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Electroanalysis called Quaternary Ammonium Based Carboxyl Functionalized Ionic Liquid for Covalent Immobilization of Horseradish Peroxidase and Development of Electrochemical Hydrogen Peroxide Biosensor, Author is Murphy, Manoharan; Theyagarajan, K.; Thenmozhi, Kathavarayan; Senthilkumar, Sellappan, which mentions a compound: 2834-05-1, SMILESS is O=C(O)CCCCCCCCCCBr, Molecular C11H21BrO2, Related Products of 2834-05-1.

A novel electrochem. biosensor was developed using a judiciously designed platform for the rapid and accurate determination of hydrogen peroxide (H2O2). The horseradish peroxidase (HRP) based biosensor was constructed by covalent anchoring of the enzyme to a newly synthesized quaternary ammonium-based carboxyl functionalized ionic liquid (TBA-COOH-IL) immobilized on a multiwalled carbon nanotube deposited glassy carbon electrode (MWCNT/GCE). A stable amide bond is formed between HRP enzyme and IL by utilizing the terminal -NH2 of HRP and -COOH groups of TBA-COOH-IL, while the pi-pi stacking holds the TBA-COOH-IL firmly on the MWCNT/GCE and forms HRP/TBA-COOH-IL/MWCNT/GCE. Thus fabricated HRP/TBA-COOH-IL/MWCNT/GCE displayed a well-resolved redox peak at a formal potential (E°’) of -0.32 V, which corresponds to the concealed FeIII/FeII redox center of the immobilized HRP enzyme. Further, the developed biosensor was employed for the electrocatalytic determination of H2O2 in static and dynamic conditions, which showed a wide linear range from 0.02 to 4.30 mM with a high sensitivity and low detection limit of 160.6μA mM-1 cm-2 and 6μM, resp. The excellent performance of the fabricated biosensor is attributed to the stable covalent anchoring of freely water-soluble enzyme on the newly designed, highly conducting and biocompatible platform. Furthermore, the fabricated biosensor exhibited good reproducibility with an extended long-term stability.

《Quaternary Ammonium Based Carboxyl Functionalized Ionic Liquid for Covalent Immobilization of Horseradish Peroxidase and Development of Electrochemical Hydrogen Peroxide Biosensor》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(11-Bromoundecanoic acid)Related Products of 2834-05-1.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Reference of 11-Bromoundecanoic acid. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]arene fragments: structure and properties in solutions. Author is Lezov, A. A.; Gubarev, A. S.; Podsevalnikova, A. N.; Senchukova, A. S.; Lebedeva, E. V.; Dudkina, M. M.; Tenkovtsev, A. V.; Nekrasova, T. N.; Andreeva, L. N.; Smyslov, R. Yu.; Gorshkova, Yu. E.; Kopitsa, G. P.; Radulescu, A.; Pipich, V.; Tsvetkov, N. V..

Temperature-responsive star-shaped poly(2-ethyl-2-oxazoline) (star-PETOX) and poly(2-isopropyl-2-oxazoline) (star-PIPOX) with arms grafted to the lower rim of thiacalix[4]arene were studied in solutions by viscometry, sedimentation velocity, light scattering, and small-angle neutron scattering. The experiments were carried out in water and THF solutions It was revealed that in THF, the studied polymers were present only as individual mols., while in aqueous solutions, in addition to individual mols., large polymer aggregates were found. Mol. characteristics of the star-PETOX and star-PIPOX samples were estimated; their behavior in THF and water was studied over a wide temperature range. It was established that a cloud point of the aqueous solution of star-PETOX (67 °C) is higher than that of a solution of star-PIPOX (35 °C). Comparison of the data obtained by dynamic light scattering and small-angle neutron scattering turned out to be fruitful in revealing all the structural levels of the organization of star-PETOX and star-PIPOX in aqueous solutions They include the level of the individual macromols. and the level of supramol. organization with a star-like architecture.

This compound(11-Bromoundecanoic acid)Reference of 11-Bromoundecanoic acid was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 2834-05-1, is researched, SMILESS is O=C(O)CCCCCCCCCCBr, Molecular C11H21BrO2Journal, Article, Angewandte Chemie, International Edition called Fabrication of Gradient and Patterned Organic Thin Films by Bipolar Electrolytic Micelle Disruption Using Redox-Active Surfactants, Author is Zhou, Yaqian; Shida, Naoki; Tomita, Ikuyoshi; Inagi, Shinsuke, the main research direction is organic thin film electrolytic micelle disruption fabrication; bipolar electrochemistry; gradient and patterned films; micelle disruption; organic films.Application In Synthesis of 11-Bromoundecanoic acid.

Bipolar electrochem. could be regarded as a powerful approach for selective surface modification due to the beneficial feature that a wirelessly controllable potential distribution on bipolar electrodes (BPEs). Herein we report a bipolar electrolytic micelle disruption (BEMD) system for the preparation of shaped organic films. A U-shaped bipolar electrolytic system with a sigmoidal potential gradient on the BPE gave gradient-thin films including various interesting organic compounds, such as a polymerizable monomer, an organic pigment and aggregation induced emission (AIE) mols. The gradient feature was characterized by UV-Vis absorption, thickness measurements and surface morphol. anal. Corresponding patterned films were also fabricated using a cylindrical bipolar electrolytic setup that enables site-selective application of the potential on the BPE. Such a facile BEMD approach will open a long-term perspective with respect to organic film preparation

This compound(11-Bromoundecanoic acid)Application In Synthesis of 11-Bromoundecanoic acid was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Goleva, Tatyana N.; Lyamzaev, Konstantin G.; Rogov, Anton G.; Khailova, Ljudmila S.; Epremyan, Khoren K.; Shumakovich, Galina P.; Domnina, Lidia V.; Ivanova, Olga Yu.; Marmiy, Natalia V.; Zinevich, Tatiana V.; Esipov, Dmitry S.; Zvyagilskaya, Renata A.; Skulachev, Vladimir P.; Chernyak, Boris V. published an article about the compound: 11-Bromoundecanoic acid( cas:2834-05-1,SMILESS:O=C(O)CCCCCCCCCCBr ).Product Details of 2834-05-1. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:2834-05-1) through the article.

An increase in the production of reactive oxygen species (ROS) in mitochondria due to targeted delivery of redox active compounds may be useful in studies of modulation of cell functions by mitochondrial ROS. Recently, the mitochondria-targeted derivative of menadione (MitoK3) was synthesized. However, MitoK3 did not induce mitochondrial ROS production and lipid peroxidation while exerting significant cytotoxic action. Here we synthesized 1,4-naphthoquinone conjugated with alkyltriphenylphosphonium (SkQN) as a prototype of mitochondria-targeted prooxidant, and its redox properties, interactions with isolated mitochondria, yeast cells and various human cell lines were investigated. According to electrochem. measurements, SkQN was more active redox agent and, due to the absence of Me group in the naphthoquinone ring, more reactive as electrophile than MitoK3. SkQN (but not MitoK3) stimulated hydrogen peroxide production in isolated mitochondria. At low concentrations, SkQN stimulated state 4 respiration in mitochondria, decreased membrane potential, and blocked ATP synthesis, being more efficient uncoupler of oxidative phosphorylation than MitoK3. In yeast cells, SkQN decreased cell viability and induced oxidative stress and mitochondrial fragmentation. SkQN killed various tumor cells much more efficiently than MitoK3. Since many tumors are characterized by increased oxidative stress, the use of new mitochondria-targeted prooxidants may be a promising strategy for anticancer therapy.

This compound(11-Bromoundecanoic acid)Product Details of 2834-05-1 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Computed Properties of C11H21BrO2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Evaluation of diuretic activity of crude extracts of leaves of filicium decipiens and analysis of biomolecules present in fraction of methanolic extract using GC-MS technique. Author is Basarikatti, A. I.; Uppar, V.; Padmashali, B..

Filicium decipiens belongs to the Sapindaceae family, which is commonly known as fern tree, is found in the Western Ghats of southern India, small highland areas of East Africa and Sri Lanka and it is a medium to a large evergreen tree. It is commonly cultivated in gardens and roadsides as ornamental, noise barriers and windbreak plant. Filicium decipiens traditionally used for the treatment of diabetes in India. The leaves of Filicium decipiens have been collected from the Western Ghats of southern India, shade dried and powd. well. The finely powd. leaves have been extracted with petroleum ether, chloroform, methanol and water successively with an increase in polarity. The methanolic extract was column chromate-graphed using silica gel G 100-200 mesh to get brown color crystalline solid, which was analyzed for the presence of bioactive chem. constituents using Gas chromatog.-mass spectrometry (GC-MS) technique. GC-MS anal. revealed the presence of thirty chem. constituents. The four different crude extracts (petroleum ether, chloroform, methanol and water) of leaves of Filicium decipiens have been tested with a diuretic activity using the Lipschitz method. The methanolic extract exhibits diuretic activity.

This compound(11-Bromoundecanoic acid)Computed Properties of C11H21BrO2 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Adsorption of phenylalanine-rich sequence-defined oligomers onto Kevlar fibers for fiber-reinforced polyolefin composite materials.Reference of 11-Bromoundecanoic acid.

Oligomers comprising four or sixteen phenylalanine residues with regularly intercalated aliphatic chains of different lengths prepared by solid-phase synthesis exhibit sufficient thermal stability to be used as interfacial agents and processed for the preparation of poly(propylene-co-ethylene)-based composite materials. The investigation of their adsorption on Kevlar fibers by SEM is difficult due to the surface heterogeneity of the bare Kevlar fibers. However, oligomers with four successive phenylalanine residues have been clearly observed suggesting their better adsorption on the fiber. The quantification of those oligomers adsorbed on the fibers performed gravimetrically on pellets of fibers has however revealed no significant impact of the length of the aliphatic chain.

Different reactions of this compound(11-Bromoundecanoic acid)Reference of 11-Bromoundecanoic acid require different conditions, so the reaction conditions are very important.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, European Journal of Inorganic Chemistry called High-Performance Catalysts Derived from Cupric Subcarbonate for Selective Hydrogenation of Acetylene in an Ethylene Stream, Author is Lu, Chenyang; Zeng, Aonan; Wang, Yao; Wang, Anjie, which mentions a compound: 12069-69-1, SMILESS is O[Cu]OC(O[Cu]O)=O, Molecular CH2Cu2O5, Application In Synthesis of Basic copper carbonate.

A high-performance base metal catalyst for acetylene selective hydrogenation was prepared from cupric subcarbonate (Cu2(OH)2CO3) by thermal treatment with an acetylene-containing gas followed by hydrogen reduction The characterization results revealed that the copper catalyst was composed of interstitial copper carbide (CuxC) and metal Cu, which were embedded in porous carbon matrix. The CuxC crystallites, which showed outstanding hydrogenation activity, were derived from the hydrogen reduction of copper (II) acetylide (CuC2) which was generated from the reaction between acetylene and Cu2(OH)2CO3. The Cu particles and porous carbon were generated from the unavoidable thermal decomposition of CuC2. The prepared Cu-derived catalyst completely removed the acetylene impurity in an ethylene stream with a very low over-hydrogenation selectivity at 110°C and atm. pressure. No obvious deactivation was observed in a 180-h test run. In the Cu-derived catalyst, CuxC served as the catalytic site for H2 dissociation, Cu mainly functioned as the site for selective hydrogenation of acetylene, whereas the porous carbon matrix posed a steric hindrance effect on the chain growth of linear hydrocarbons so as to suppress the undesired oligomerization.

Different reactions of this compound(Basic copper carbonate)Application In Synthesis of Basic copper carbonate require different conditions, so the reaction conditions are very important.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 11-Bromoundecanoic acid(SMILESS: O=C(O)CCCCCCCCCCBr,cas:2834-05-1) is researched.Application In Synthesis of Basic copper carbonate. The article 《Shaping Liquid Crystals with Gold Nanoparticles: Helical Assemblies with Tunable and Hierarchical Structures Via Thin-Film Cooperative Interactions》 in relation to this compound, is published in Advanced Materials (Weinheim, Germany). Let’s take a look at the latest research on this compound (cas:2834-05-1).

The availability of helical assemblies of plasmonic nanoparticles with precisely controlled and tunable structures can play a key role in the future development of chiral plasmonics and metamaterials. Here, a strategy to efficiently yield helical structures based on the cooperative interactions of liquid crystals and gold nanoparticles in thin films is developed. These nanocomposites exhibit exceptional long-range hierarchical order across length scales, which results from the growth mechanism of nanoparticle-coated twisted nanoribbons and their ability to form organized bundles. The helical assembly formation is governed by the presence of rationally functionalized nanoparticles. Importantly, the thickness of the achieved nanocomposites can be reversibly reconfigured owing to the polymorphic nature of the liquid crystal. The versatility of the proposed approach is demonstrated by preparing helixes assembled from nanoparticles of different geometries and dimensions (spherical and rod-like). The described strategy may become an enabling technol. for structuring nanoparticle assemblies with high precision and fabricating optically active materials.

Different reactions of this compound(11-Bromoundecanoic acid)SDS of cas: 2834-05-1 require different conditions, so the reaction conditions are very important.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 12069-69-1, is researched, Molecular CH2Cu2O5, about An ultrathin amino-acid based copper(II) coordination polymer nanosheet for efficient epoxidation of β-caryophyllene, the main research direction is caryophyllene epoxidation copper isoleucine ethanol nanosheet catalyst green.HPLC of Formula: 12069-69-1.

Natural amino acids are important building blocks for the construction of intriguing coordination polymers (CPs) because of their abundance, inexpensiveness and environmental benignness. Herein, two copper(II) CPs, namely, 2D CuIle-e nanosheet (e: ethanol) and 1D CuIle-m nanoshuttle (m: methanol), were fabricated from L-isoleucine (Ile) and well characterized with single-crystal x-ray diffraction, XPS spectra, TEM and AFM, etc. More importantly, two novel and stable catalytic nanosystems, i.e., CuIle-e/acetone/TBHP (tert-Bu hydroperoxide) and CuIle-e/THF/O2/TBHP, were thus conveniently built by using ultrathin 2D CuIle-e nanosheet (∼ 2.3 nm) in suitable aprotic solvents. Under mild conditions, complete conversion of β-caryophyllene and good yields (86.1% or 87.2%) for β-caryophyllene epoxide were gained via CuIle-e/acetone/TBHP or CuIle-e/THF/O2 (1 atm)/TBHP (10.0 mol%), resp. Notably, ultrathin CuIle-e nanosheet showed fairly satisfactory stability, which may open a unique window for the facile fabrication of new amino-acid based CP nanosystems with outstanding catalytic performances in actual applications.

《An ultrathin amino-acid based copper(II) coordination polymer nanosheet for efficient epoxidation of β-caryophyllene》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(Basic copper carbonate)HPLC of Formula: 12069-69-1.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI